420786713 has 4 divisors (see below), whose sum is σ = 421361508. Its totient is φ = 420211920.

The previous prime is 420786701. The next prime is 420786719. The reversal of 420786713 is 317687024.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 342694144 + 78092569 = 18512^2 + 8837^2 .

It is a cyclic number.

It is not a de Polignac number, because 420786713 - 2¹⁶ = 420721177 is a prime.

It is a super-2 number, since 2×420786713² = 354122915674688738, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (420786719) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 286298 + ... + 287763.

It is an arithmetic number, because the mean of its divisors is an integer number (105340377).

Almost surely, 2^420786713 is an apocalyptic number.

It is an amenable number.

420786713 is a deficient number, since it is larger than the sum of its proper divisors (574795).

420786713 is an equidigital number, since it uses as much as digits as its factorization.

420786713 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 574794.

The product of its (nonzero) digits is 56448, while the sum is 38.

The square root of 420786713 is about 20513.0863840622. The cubic root of 420786713 is about 749.3545338425.

The spelling of 420786713 in words is "four hundred twenty million, seven hundred eighty-six thousand, seven hundred thirteen".